Patents by Inventor Hans-Olof Sall

Hans-Olof Sall has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Counter rotating double disc chunker
    Patent number: 4630658
    Abstract: A device for disintegration of wood material such as roundwood, tree-tops, branches, waste wood, etc to firewood of a suitable length, said device comprising cutting members for the disintegration. In order to reduce the energy need the invention device comprises two cutting members which rotate in opposite directions and are provided with knives on their insides, one of the two cutting members being arranged to actuate by its knife material fed between the two cutting members in one direction while the other cutting member is arranged to actuate by its knife the material in the opposite direction for cutting off the material between the knives of the two cutting members.
    Type: Grant
    Filed: May 16, 1985
    Date of Patent: December 23, 1986
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Rodger A. Arola, Hans-Olof Sall